If 2007's Bracelet Battery
didn't match your lifestyle, there's a good chance 2010's model won't either. That's because it looks identical to the prior model, sporting the kind of style that would go perfectly with a Caped Crusader costume and virtually nothing else. New with this year's model is an adapter cable that enables it to work with an even greater variety of devices, a 1,500mAh lithium-ion battery, and (wonder of wonders) an on/off switch. Yours for just ¥3,980 -- about $40.
Thanko Bracelet Battery